diff --git a/pool/page_payout.php b/pool/page_payout.php
index e45e70ca..5949edf3 100644
--- a/pool/page_payout.php
+++ b/pool/page_payout.php
@@ -6,11 +6,11 @@ function dopayout($data, $user)
  $pg .= '<table width=75% cellpadding=0 cellspacing=0 border=0>';
  $pg .= '<tr><td class=dc>';
  $pg .= 'We use PPLNS (pay per last N shares)<br><br>';
- $pg .= 'The N value used for PPLNS is the network difficulty';
+ $pg .= 'The N value used for PPLNS is 5 times the network difficulty';
  $pg .= ' when a block is found,<br>';
  $pg .= 'but includes the full shift at the start and end of the range,<br>';
- $pg .= 'so it usually will be a bit more than N.<br><br>';
- $pg .= 'Shifts are ~30s long, however, when a block is found<br>';
+ $pg .= 'so it usually will be a bit more than 5N.<br><br>';
+ $pg .= 'Shifts are ~30s long, however, when any network block is found<br>';
  $pg .= 'the current shift ends at the point the block was found.<br>';
  $pg .= 'A ckpool restart will also start a new shift.<br><br>';
  $pg .= 'Transaction fees are included in the miner payout.<br>';
diff --git a/pool/page_pplns.php b/pool/page_pplns.php
index 50eb8b4b..dccd04f6 100644
--- a/pool/page_pplns.php
+++ b/pool/page_pplns.php
@@ -144,6 +144,8 @@ Block: <input type=text name=blk size=10 value='$blkuse'>
 		$dotx = true;
 
 	$flds = array('height' => $blk, 'allow_aged' => 'Y');
+	if ($blk > 334106)
+		$flds['diff_times'] = '5';
 	$msg = msgEncode('pplns', 'pplns', $flds, $user);
 	$rep = sendsockreply('pplns', $msg);
 	if ($rep == false)
diff --git a/src/ckdb.h b/src/ckdb.h
index bb04ac3a..07584c2a 100644
--- a/src/ckdb.h
+++ b/src/ckdb.h
@@ -52,7 +52,7 @@
 
 #define DB_VLOCK "1"
 #define DB_VERSION "0.9.6"
-#define CKDB_VERSION DB_VERSION"-0.752"
+#define CKDB_VERSION DB_VERSION"-0.760"
 
 #define WHERE_FFL " - from %s %s() line %d"
 #define WHERE_FFL_HERE __FILE__, __func__, __LINE__
diff --git a/src/ckdb_cmd.c b/src/ckdb_cmd.c
index ae524de8..9f3ae8bb 100644
--- a/src/ckdb_cmd.c
+++ b/src/ckdb_cmd.c
@@ -3163,6 +3163,16 @@ static K_TREE *upd_add_mu(K_TREE *mu_root, K_STORE *mu_store, int64_t userid, in
 	data going back in time to 'begin'
 */
 
+/* Blocks after 334106 were set to 5xN
+ *  however, they cannot count back to include the workinfoid of 333809
+ *  due to the markersummaries that were created.
+ * Code checks that if the block is after FIVExSTT then it must stop
+ *  counting back shares at - and not include - FIVExWID */
+#define FIVExSTT 334106
+#define FIVExLIM 333809
+// 333809 workinfoid
+#define FIVExWID 6085620100361146842
+
 static char *cmd_pplns(__maybe_unused PGconn *conn, char *cmd, char *id,
 			  __maybe_unused tv_t *now, __maybe_unused char *by,
 			  __maybe_unused char *code, __maybe_unused char *inet,
@@ -3196,7 +3206,7 @@ static char *cmd_pplns(__maybe_unused PGconn *conn, char *cmd, char *id,
 	double diff_times = 1.0;
 	double diff_add = 0.0;
 	double diff_want;
-	bool allow_aged = false;
+	bool allow_aged = false, countbacklimit;
 	char ndiffbin[TXT_SML+1];
 	size_t len, off;
 	int rows;
@@ -3288,6 +3298,11 @@ static char *cmd_pplns(__maybe_unused PGconn *conn, char *cmd, char *id,
 		return strdup(reply);
 	}
 
+	if (blocks->height > FIVExSTT)
+		countbacklimit = true;
+	else
+		countbacklimit = false;
+
 	begin_workinfoid = end_workinfoid = 0;
 	total_share_count = acc_share_count = 0;
 	total_diff = 0;
@@ -3322,6 +3337,11 @@ static char *cmd_pplns(__maybe_unused PGconn *conn, char *cmd, char *id,
 			default:
 				share_status = "Not ready1";
 		}
+
+		// Stop before FIVExWID if necessary
+		if (countbacklimit && sharesummary->workinfoid <= FIVExWID)
+			break;
+
 		ss_count++;
 		total_share_count += sharesummary->sharecount;
 		acc_share_count += sharesummary->shareacc;
@@ -3377,6 +3397,10 @@ static char *cmd_pplns(__maybe_unused PGconn *conn, char *cmd, char *id,
 		DATA_WORKMARKERS_NULL(workmarkers, wm_item);
 		while (total_diff < diff_want && wm_item && CURRENT(&(workmarkers->expirydate))) {
 			if (WMPROCESSED(workmarkers->status)) {
+				// Stop before FIVExWID if necessary
+				if (countbacklimit && workmarkers->workinfoidstart <= FIVExWID)
+					break;
+
 				wm_count++;
 				lookmarkersummary.markerid = workmarkers->markerid;
 				lookmarkersummary.userid = MAXID;